Detachable sash fastener



Nov. 30, i948.

F. MASTRANGELO DETAGHABLE sAsH FASTENER Filed No. 18, 1944 g, 2 faq ,20

. IN V EN TOR. E /MJ TRM/6H. a

Patented Nov. 30, 1948 DETACHABLE SASH FASTENER Frank Mastrangelo, Fitchburg, Mass., assignor of one-half to Faustina Mastrangelo, Lunenburg, ,and one-half to Bianca Mastrangelo, Fitch'- burg, Mass.

Application November 18, 1944, Serial No. 564,018

1 claim. (o1. 29g-241) 1 This invention relates to quick detachable sash fastener which can be used either for screens or window glass.

Objects of the invention include the provision of quick detachable and interchangeable sash for storm windows and screens which are installed from the interior of the building without the necessity for any additional frames, other than the conventional window frame which forms a permanent part of the building in any case; and the provision of a special type of hardware for fastening the detachable sash Ato the window frame at the interior only and still allowing the upper permanent window to be raised and lowered.

Other objects of the invention include the provision of a combination storm and screen sash in combination with a special type of hardware which provides for securemcnt of the sash to a window from the interior, the hardware being disposed on the sash and on the edge of the window frame and allowing raising and lowering of the permanent windows.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. l is a View in elevation from the interior and showing the detachable sash in place, the windows being removed for clarity in illustration;

Fig. 2 is a Vertical section through the window illustrating the strikers on the window frame edge;

Fig. 3 is an enlarged detail of the hardware at the right of the window looking in the direction of arrow 3 in Fig. 2;

Fig. 4 is an enlarged detail of a striker plate at the left of the window;

Fig. 5 is an enlarged showing of thehardware at the right of the window, and

Fig. 6 is an enlarged section on line 6-6 of Fig. 1.

The desirability of providing storm and screen sash to be secured at the window area from the interior of the building has always been recognized, but in the prior art it has been found necessary to first secure a frame about the window against which the storm sash is interiorly secured, this frame being then permanent. This invention does away with the frame and provides a construction wherein the sash is secured directly to the original window frame at the exterior thereof, but is applied from the interior,

the detachable fastenings al1 being interior of the sash and out of the way of movement of the permanent windows which may be raised and lowered as usual. l

y In the drawings there is shown by Way of i1- lustration a wind-ow vframe forming a permanent part of a building as originally set in, this frame having a sill I0, side members l2, and `I4 and a lintel I6. In Fig. 1, the interior aspect is seen andv in Fig, 2 the side member I4 is shown as having the usual vertical window guides I8 for the permanent window sash 20, the latter being movable in the guides. The easement is shown at 22.

The detachable storm and screen sash comprise side members 24 and 25 rabbeted at 26, a bottom member 28 and top member 30 connecting the rabbeted members. The upper and lower detachable sashes are of course different in their top and bottom members, the top member 32 of the upper sash being rabbeted at 34. All the rabbets are such as to accommodate and t the sides I2, I4 and lintel I6 as shown in Fig. 1, so that the body of each of the detachable sash members extend slightly inwardly of the exterior surface of the permanent frame as best shown in Fig. 6.

Latches are provided to secure the detachable sash to the permanent frames, and it is particularly to be noted that all the latches are exactly the same. Cam type striker plates are provided on the permanent frames, and as the latches are rotated to secure the sash, they also draw the sash up tightly to the frame. In Fig. 1 there are shown left-hand latches at 3S in free or unf latched condition and latches at 38 in locking condition; and right-hand free latches at 40 and locked latches at 42.

Each rotary latch comprises a body 44 which is adapted to rotate on a pin or screw fastener 46. Each rotary body has a pair oi radial projections i8 disposed at right angles to each other. Each projection has a pair of upturned ears 5B forming nger grips as well as means tostart the projections onto the cams to be described, on a raised or offset portion 52, the latter being concave at their surfaces facing the body portion 44. It is to be noted that these rotary latches all have a horizontal and a Vertical projection in Fig. 1, whether or not the sash is latched, and that in all cases the entire latch is located within the side edges of members 24 and 25 when in latched condition, so that they are invisible from the outside of the window. In all cases, one projection of each latch acts as a handle and the other as the latch member.

All the cam striker plates are alike and each such plate comprises a base 54 from which is struck up a cam element 56 located at an angle to the edges of the plate as clearly shown in Figs. 3 and 4. .The bases 54 are fastened to the vertical side, edges only,v of the permanent` window frames and, face each other. The uninterrupted long side edge of the base is aligned generally with the interior aspect of the window frame at both sides of the window and the base is narrower than the thickness of the window frame to allow the rabbet on the detachable sash to correctly' it, see Fig. 6. 4 y

By this means, all the striker plates atthe right-hand sidi of the Window, as the observer looks outwards, are located with the inclined cam 56 descending to the right, see'Figs. 2 andf3; While the left-hand cams, although turned end for end, extend in the same direction. This means that thelupper ends of the right-hand cams are closer tothe sashmember 25 than the lower ends; and the reverse is true of the left-,hand cams. Therefore, the latchesrare all rotated in a clockwise direction to latch and rotate anti-clockwisewfor unlat'ching, but the Ieit-handlatching projection ifs' -turned up and theright-hand latchng projection is turned down,

Asclearly, shown in Figs, 3 and 6, the striker plates andlatches [are entirely contained within the area'or'dimension found between the inside euri-ace of the permanent traine I2, f4, No part of ther hardware extends either to the outside of the .detachable sash or to the inside or outside of i 4 the permanent frame. No fasteners mar the ap pearance outwardly of the installation and the latches are largely hidden behind the side members of the permanent sash so far as the inward appearance is concerned.

Having thus describedmy invention and the advantagesgthereof, Ido not wish to be limited to the details herein disclosed, otherwise than as set forth in the claim, but what I claim is:

Latch for detachable sash comprising a rotary member adapted to be mounted on the detachable sash for co-action with a cam member on a permanent support, a plurality of radial ingers on the/rotary member, said fingers each having a curved under surface for engagement with the cam, each finger being selectively operable as a latching member or a handle, and including anges on the fingers providing finger grips.

' FRANK MASTRANGELO.

REFERENCES vCrm1) The following references are of record in the file ofV this patent:

UNITEDSTATES PATENTS 

